STONEX R2 User Manual

STONEX R2
214
⑮ Calculation of Spiral Transition coordinate
 sinRN
N
m

=63.348-100sin18°20′06″=31.891
Symmetry spiral transition
NN
mm 21

⑯ Calculation of Tangent Distance
N
RRD
m
LALAec
LA
R
1
121
)cot()(cos)
2
tan( 
LA
111°55′47″，
sin
1
cos ec
,
tan
1
cot 

D
1
100 * tan(111°55′47″/ 2) +1.7(1 / sin111°55′47″)
–1.7(1 / tan 111°55′47″) +31.891
=148.06015 + 1.8326 + 0.6844 +31.891
=182.468
DD
21

⑰ Calculation of the coordinate KA1

1
1
11
cos
D
NN
IPKA

1
111
sin
DEE
IPKA
Bearing from BP to IP1



1
74°03′16.6″

N
KA1
1300 –182.468 * cos 74°03′16.6″=1249.872 m

E
KA1
1750 –182.468 * sin 74°03′16.6″=1574.553 m
⑱ Calculation of Arc Length
)(
21

 LARL
=R (111°55′47″-2 * 18°20′06″)
=100(75°15′35″
180


)
=131.353 m
⑲ Calculation of the coordinate KA2

2
2
12
cos
D
NN
IPKA

2
212
sin
DEE
IPKA
Bearing from IP1 to IP2



2
322°07′30.1″

N
KA2
1300 –(-182.468) * cos 322°07′30.1″= 1444.032 m

STONEX R2 Specifications

General

Brand	STONEX
Model	R2
Category	Measuring Instruments
Language	English